73721

Properties

Appears in sequences

• Primes of the form k^2 + k + 9.at n=30A027758
• Expansion of 1/((1-3x)(1-6x)(1-7x)(1-10x)).at n=4A028076
• Primes p such that p+7 == 0 (mod phi(p+7)).at n=34A067606
• Smallest prime obtained as a sum of n terms of a geometric progression + the common ratio, or 0 if no such terms exists. Smallest prime of the form (a +ar +ar^2 + ar^3 +... ) + r.at n=12A088121
• Expansion of (1-x+7x^2)/((1-x)(1-2x)).at n=14A154251
• a(n) is the smallest positive number B that yields a solution for k = A167219(n).at n=41A167221
• Primes from merging of 5 successive digits in decimal expansion of sqrt(2).at n=15A198165
• Primes of the form 8n^2 - 7.at n=22A201858
• a(2*n) = 9*2^n - 7, a(2*n+1) = 3*2^(n+2) - 7.at n=26A354789
• Prime numbersat n=7280